Mayville Engineering Company, Inc.

MEC

Exchange: NYSE
Industry: Metal Forgings & Stampings
SEC CIK: 0001766368

SEC filings (opens in a new tab)

In the last 90 days, Mayville Engineering Company, Inc. insiders filed 0 open-market purchases and 1 sale; 155 institutions reported holding it in 13F filings for Q2 2026, worth $790.6M in total; no superinvestor holds it.

Q1 2026 vs. Q4 2025

How the institutions holding Mayville Engineering Company, Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of MEC: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Of which not filed for Q1 2026	Q1 2026	Change
Holders	123	3	124	+4
Shares	13.9M	658.0K	14.4M	+1.18M (+8.9%)
Value	$260.4M	$12.3M	$258.4M	+$10.4M (+4.2%)

3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (24)

Institutions that held Mayville Engineering Company, Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to MEC in Q1 2026
Institution	Shares	Value	% of portfolio
Vanguard Capital Management LLC	594,938	$10.7M	0.00%
Panoramic Capital, LLC	140,000	$2.51M	1.76%
Empowered Funds, LLC	123,293	$2.21M	0.01%
Squarepoint Ops LLC	110,569	$1.98M	0.00%
Vanguard Fiduciary Trust Co	91,044	$1.63M	0.00%
Vanguard Portfolio Management LLC	75,903	$1.36M	0.00%
Integrated Quantitative Investments LLC	50,659	$909.3K	0.16%
HighTower Advisors, LLC	44,587	$800.3K	0.00%
Numerai GP LLC	39,755	$713.6K	0.07%
Legato Capital Management LLC	35,698	$640.8K	0.06%
Two Sigma Investments, LP	34,708	$623.0K	0.00%
North Star Investment Management Corp.	30,000	$538.5K	0.03%
Needham Investment Management LLC	20,000	$359.0K	0.02%
Mirabella Financial Services LLP	12,430	$223.1K	0.02%
Brevan Howard Capital Management LP	12,023	$215.8K	0.00%
Heck Capital Advisors, LLC	11,494	$206.3K	0.02%
Harbor Capital Advisors, Inc.	7,785	$140.0K	0.01%
Vanguard Global Advisers, LLC	5,936	$106.6K	0.00%
Fifth Third Bancorp	118	$2.11K	0.00%
Advisory Services Network, LLC	115	$2.06K	0.00%
Annis Gardner Whiting Capital Advisors, LLC	80	$1.44K	0.00%
Bayban	43	$772	0.00%
Farther Finance Advisors, LLC	14	$251	0.00%
Root Financial Partners, LLC	5	$90	0.00%

Sold out (20)

Institutions that held Mayville Engineering Company, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of MEC in Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
22NW, LP	414,280	$7.76M
Jane Street Group, LLC	53,074	$993.5K
Raymond James Financial Inc	38,672	$723.9K
Jacobs Levy Equity Management, Inc	31,868	$596.6K
Sentinus, LLC	30,000	$561.6K
D. E. Shaw & Co., Inc.	19,416	$363.5K
Wealth Enhancement Advisory Services, LLC	13,792	$245.4K
HRT Financial LP	12,933	$242.0K
Boothbay Fund Management, LLC	12,160	$227.6K
ExodusPoint Capital Management, LP	11,316	$211.8K
Quest Partners LLC	10,954	$205.1K
Quantbot Technologies LP	7,827	$146.5K
Picton Mahoney Asset Management	5,800	$108.6K
Public Employees Retirement System of Ohio	2,189	$41.0K
Clearstead Advisors, LLC	2,094	$39.2K
Quarry LP	659	$12.3K
Amalgamated Bank	411	$8.00K
Torren Management, LLC	26	$487
SRS Capital Advisors, Inc.	2	$37
Covestor Ltd	11	$0

Not filed for Q1 2026 yet (3)

Institutions that held Mayville Engineering Company, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MEC in Q4 2025 that haven't filed for Q1 2026
Institution	Shares, Q4 2025	Value, Q4 2025
Vanguard Group Inc	627,655	$11.7M
Perritt Capital Management Inc	30,000	$561.6K
Comerica Bank	358	$6.70K